Home / 19,894.20-29,855.70-11,119.80

Finding the Fourth Proportional to 19,894.20, 29,855.70 and 11,119.80

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Solution

The fourth proportional to 19,894.20, 29,855.70 and 11,119.80 is: 16,687.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,894.20 : 29,855.70 = 11,119.80 : x
  2. Step 2: Convert to fraction form
    19,894.20/29,855.70 = 11,119.80/x
  3. Step 3: Cross multiply
    19,894.20x = 29,855.70 × 11,119.80
  4. Step 4: Simplify right side
    19,894.20x = 331,989,412.86
  5. Step 5: Solve for x
    x = 331,989,412.86/19,894.20
  6. Step 6: Final answer
    x = 16,687.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.